Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5401004 | Method and apparatus for installing a nozzle insert in a steelmaking ladle | Alvin M. Nestler, John P. Hoffman, John Lewis Hogan, III | 1995-03-28 |
| 5337470 | Method and apparatus for removing a nozzle insert from a steelmaking ladle | John P. Hoffman, Alvin M. Nestler, Donald J. Idstein | 1994-08-16 |